在某些情况下也可能产生附加应力循环。
试验包括热循环、应力循环和应力热循环等。
Experiments carried out include thermal, stress and stress-thermal cyclings.
试件在超过107周应力循环后继续发生破坏。
The specimens continued to fail over 10 7, even 10 7 stress cycles.
假定一辆卡车产生一次应力循环，这将产生1．5百万次变幅应力循环。
This would result in about 1. 5 million variable amplitude stress cycles, assuming each truck produces one stress cycle.
疲劳寿命(Nf)：在某一指定应力幅值下，引起疲劳失效的应力循环总数。
Fatigue life (Nf). The total number of stress cycles that will cause a fatigue failure at some specified stress amplitude.
用指数函数对波浪和海冰作用下平台构件的疲劳应力、应力循环次数和环境参数的关系进行了拟合，拟合精度很好。
The exponential functions were used to reflect the relationship among fatigue stress, number of stress cycles and environmental parameters. The fitting precision of the functions was relatively high.
在循环应力作用下，对砂岩和石英砂两种结构较松散的样品进行了实验研究。
Experiments are made on sandstone and quartz powder, whose structures are incompact under the function of cyclic stresses.
通过对其疲劳性能的实验研究，发现裂纹扩展速率的大小及刚度的下降与加载的最大循环应力密切相关的规律。
The fatigue properties were researched and found that the crack propagation velocity and the decline of rigidity were related to the maximum cycle stress.
本文对局部经受高温热循环构件的热弹塑性应力进行了有限元分析。
In this paper, the thermal elastic-plastic stresses of the components which underwent local high temperature cycle were analyzed by FEM.
从唯象观点分析了循环变形期间相变应力和弹性模量的变化。
The change of transformation stress and the modulus of elasticity during cyclic deformation was analyzed from the continuum mechanical point of view.
承受不同循环载荷共同作用的压力容器，其概率疲劳寿命和在高应力水平上的循环载荷有着密切的关系。
The probability fatigue life - span of pressure vessel under the action of different cycle load is closely related to the cycle load with high stress.
试验结果表明，玻璃纤维长丝纱有较明显的应力松驰现象，反复循环负荷作用对玻璃纤维长丝纱的强伸性能有较大的影响。
As a result, the stress-relaxation of yarn is obviously observed, and the cyclic loading has much more influence on the tensile property of yarn.
一种疲劳失效类型，循环应力是由于交变热应力引起的。
Thermal fatigue. A type of fatigue failure wherein the cyclic stresses are introduced by fluctuating thermal stresses.
孔洞在不同的应力状态条件下和循环压制阶段具有不同的变形过程。
The deformation behaviour of the pores is different at different stress state and different cyclic pressing stage.
着重研究了不同循环历史对后面循环稳定应力幅值的影响。
The authors have especially investigated the effect of different cyclic history on the amplitudes of stabilized stresses.
研究表明在完全循环加载过程中，由于残余应变的存在，马氏体相变应力随循环增加而减小。
The research results show martensite transformation stress decreases with an increase in cycle due to the residual strain during full cyclic loading.
结果表明，扭转预应变降低低周疲劳寿命，循环应力随扭转预应变的增大而增大。
The results show that low cycle fatigue life is reduced and cyclic stress is raised by torsional prestrain raising.
因此，无磁杜瓦在使用过程中反复冷却及复温所产生的循环应力载荷，是导致其真空性能下降的一个重要原因。
Therefore, the cyclic stress caused by repeatedly cooling and heating during the usage of non-magnetic Dewar is one of the important reasons that causes the decrease of vacuum performance.
同样在存放时由风力引起的横向摆动也可以产生类似的循环应力。
Similar cyclic stresses may have occurred due to wind-induced swaying motion during storage.
文中还就残余应力在循环载荷作用下的松弛问题进行了实验研究。
Relaxation of the residual stress caused by circular loading was investigated experimentally.
由循环应力和化学腐蚀同时作用导致的一类失效。
Corrosion fatigue. A type of failure that results from the simultaneous action of a cyclic stress and chemical attack.
温度循环是环境应力筛选中最常用、最有效的筛选模式。
Thermal cycle is the most usual and the most efficient screening mode of ESS.
新发现随机循环应力—应变响应现象并建立其概率模型。
The random cyclic stress-strain responses are found and its probabilistic model is established.
满应力设计准则是近似的，同时必须循环运用应力比算法。
The fully stressed design criterion is approximate and the stress ratio algorithm must be used repeatedly.
同时，在各个冲击功下，材料的磨损机理在冲击应力的循环作用下随时间发生明显变化。
Furthermore, at all impact power, the wear mechanism of the material changes distinctively with the time under the cyclic impact stress.
研究结果表明，厚壁筒自增强残余应力在循环载荷的作用下，残余应力衰减达到近30%。
The result showed that the attenuation of residual stress of autofrettaged thick-walled cylinder reached about 30% under cycle loading.
在低循环应力时，真空环境中的疲劳断裂次数可比室温大气环境中的高近4倍。
Under lower cyclic stresses, the fatigue cycles to failure in vacuum is increased approximately 4 times than in air.
记录了各自的循环应力—应变滞后环，得出了试样的循环响应特征和各试样的高温低周疲劳寿命。
The individual cycle-strain hysteresis loops were recorded, and the cycling response and high temperature low cycle fatigue life were obtained.
确定发动机零部件的最大应力应变循环是进行零部件寿命研究的重要内容之一。
To determine the principal maximal stress-strain cycle of engine components is an important step in research on engine components' life.
确定发动机零部件的最大应力应变循环是进行零部件寿命研究的重要内容之一。
To determine the principal maximal stress-strain cycle of engine components is an important step in research on engine components' life.
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